H04J 14/0291
Shared protection at the optical multiplex section
Official title: {Shared protection at the optical multiplex section (1:1, n:m)}
H04J14/0291 (Shared protection at the optical multiplex section) appears on 322 US grants and 288 published applications in this corpus.
Search patents in H04J- Granted patents
- 322
- Published applications
- 288
- Assignees
- 139
- Inventors
- 740
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 7 | 0 |
| 1999 | 10 | 0 |
| 2000 | 18 | 0 |
| 2001 | 10 | 6 |
| 2002 | 9 | 41 |
| 2003 | 18 | 32 |
| 2004 | 22 | 26 |
| 2005 | 21 | 27 |
| 2006 | 21 | 21 |
| 2007 | 23 | 17 |
| 2008 | 23 | 7 |
| 2009 | 12 | 14 |
| 2010 | 18 | 8 |
| 2011 | 8 | 8 |
| 2012 | 7 | 10 |
| 2013 | 10 | 6 |
| 2014 | 10 | 7 |
| 2015 | 7 | 8 |
| 2016 | 6 | 6 |
| 2017 | 9 | 3 |
| 2018 | 4 | 7 |
| 2019 | 7 | 11 |
| 2020 | 9 | 6 |
| 2021 | 6 | 6 |
| 2022 | 9 | 3 |
| 2023 | 2 | 3 |
| 2024 | 2 | 1 |
| 2025 | 1 | 2 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Communication station, optical communication system, data transmission method, and storage medium20 May 2025US 12,308,948 B2Accelink Technologies Co., Ltd.
- Control plane triggered (CPT) optical protection switching (OPS)23 Apr 2024US 11,967,984 B2Ciena Corporation
- System and methods for distribution of heterogeneous wavelength multiplexed signals over optical access network16 Jan 2024US 11,876,560 B2Cable Television Laboratories, Inc.
- Methods and apparatus for multiplexing and demultiplexing optical signals of protected optics17 Sep 2026US 2026/0280746 A1Molex Incorporated
- Quantum entanglement distribution using multiple optical paths and automated switchover18 Jun 2026US 2026/0172122 A1Amazon Technologies, Inc.
- Optical transmission device and related network25 Dec 2025US 2025/0392392 A1Huawei Technologies Co., Ltd.
- Quantum entanglement distribution using multiple optical paths and automated switchover2 Jan 2025US 2025/0007621 A1Amazon Technologies, Inc.
- Optical path route design device and optical path route design method4 Jul 2024US 2024/0223925 A1Nippon Telegraph and Telephone Corporation
Most cited
By later US patents
- Method and apparatus for multiplexing in a wireless communication infrastructure211US 6,826,163 B2NEXTG Networks · 2004
- Method and apparatus for multiplexing in a wireless communication infrastructure201US 6,826,164 B2NEXTG Networks · 2004
- WDM optical network with passive pass-through at each node146US 6,084,694 ANortel Networks Limited · 2000
- Optical cross-connect system with space and wavelength division switching stages for minimizing fault recovery procedures131US 5,457,556 ANEC Corporation · 1995
- Optical wavelength division multiplexed network system110US 5,717,795 AKabushiki Kaisha Toshiba · 1998